Cathy and Sherri Had to Finish All of Their Vegetables

question 75

Multiple Choice

Cathy and Sherri had to finish all of their vegetables before they could have dessert. Cathy complained that Sherri didn't have as much to finish as she did, even though both girls had the same amount (Cathy's vegetables were just more spread out) . Cathy's error stems from a failure to understand the concept of

• A)conservation.
• B)complementarity.
• C)concrete operations.
• D)object permanence.

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Definitions:

Maximum Allowable Error

The largest error that is considered acceptable in the calculation or measurement process.

Test Statistic

A value calculated from sample data that is used to test a hypothesis in statistics.

Normal

A type of statistical distribution where data is symmetrically distributed around the mean, known as the Gaussian distribution.

Confidence Interval

A range of values derived from sample statistics that is likely to contain the value of an unknown population parameter, with a specified level of confidence.